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Machining Services

Our machine shop has also been re-located as part of the business move to Rugby, we anticipate the machines will be operational around mid December. Orders placed which include custom bore sizes and tapped holes will be processed as soon as the machines are spinning again.


8mm Steel Chain Sprockets

High quality 8mm pitch British Standard sprockets in the most popular sizes. Sizes we do not stock at technobots are available through our gearsandsprockets website that offers a far greater range of transmission components.

These sprockets are supplied with a pilot bore that can be machined to a larger accurate diameter (subject to boss size) although many users find the pilot bore quite acceptable. Using our 'Custom Machining' service, we can not only bore out these sprockets but also drill and tap for set (grub) screw fixing. See the 'Custom Machining' tab with each product for more information.

Nominal tooth width: 2.8mm

Steel EN8, 080M40/080M46

 

05B Pitch 8mm
Bore size is subject to change from table below, if bore size is critical then select 'Custom Bore Size' with bore required when making purchase.
Overall Width 'A'  See Below
Tooth Width 'B1' 2.8mm
Teeth Diameter 'de' PCD Ø 'dp' Boss Ø dm Bore Ø 'D1' Overall Width
Teeth Diameter 'de' PCD Ø 'dp' Boss Ø dm Bore Ø 'D1' Overall Width
8 24 20.9 13 6 12
27 72.2 68.91 40 10 16
9 26.6 23.39 15 6 12
28 74.8 71.45 40 10 16
10 29.2 25.89 17 8 12
29 77.3 73.99 40 10 16
11 31.7 28.39 18 8 13
30 79.8 76.53 40 10 16
12 34.2 30.91 20 8 13
31 82.4 79.08 40 10 16
13 36.7 33.42 23 8 13
32 84.9 81.61 40 10 16
14 39.2 35.95 25 8 13
33 87.5 84.16 40 10 16
15 41.7 38.48 28 8 13
34 90 86.7 40 10 16
16 44.3 41.01 30 8 14
35 92.5 89.25 40 10 16
17 46.8 43.53 30 8 14
36 95 91.79 40 10 16
18 49.3 46.07 30 8 14
37 97.6 94.33 40 10 16
19 51.9 48.61 30 8 14
38 100.2 96.88 40 10 16
20 54.4 51.14 30 8 14
39 102.7 99.42 40 10 16
21 57 53.68 35 8 14
40 105.3 101.97 40 10 16
22 59.5 56.21 35 8 14
45 118 114.69 60 12 20
23 62 58.75 35 8 14
50 130.7 127.41 60 12 20
24 64.6 61.29 35 8 14
57 148.6 145.22 80 14 20
25 67.5 63.83 35 8 14
76 197.7 193.59 80 20 25
26 69.5 66.37 40 10 16







05B Steel Chain Sprocket 8mm - 8T

Part No.: 4805-008

Shipping Weight: 12.00 g.

£1.41 (£1.69 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 9T

Part No.: 4805-009

Shipping Weight: 17.00 g.

£1.87 (£2.24 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 10T

Part No.: 4805-010

Shipping Weight: 20.00 g.

£2.16 (£2.59 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 11T

Part No.: 4805-011

Shipping Weight: 28.00 g.

£2.16 (£2.59 inc tax)
Out of Stock
Stocks Overdue
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 12T

Part No.: 4805-012

Shipping Weight: 32.00 g.

£2.13   £1.37 (£1.64 inc tax)
-36%
In stock
End of line, less than 60 remaining
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 13T

Part No.: 4805-013

Shipping Weight: 45.00 g.

£2.13 (£2.56 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 14T

Part No.: 4805-014

Shipping Weight: 53.00 g.

£2.52 (£3.02 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 15T

Part No.: 4805-015

Shipping Weight: 70.00 g.

£2.97 (£3.56 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 16T

Part No.: 4805-016

Shipping Weight: 82.00 g.

£2.44 (£2.93 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 18T

Part No.: 4805-018

Shipping Weight: 89.00 g.

£2.85 (£3.42 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 20T

Part No.: 4805-020

Shipping Weight: 95.00 g.

£3.18 (£3.82 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 25T

Part No.: 4805-025

Shipping Weight: 140.00 g.

£4.29   £2.68 (£3.22 inc tax)
-38%
In stock
End of line, less than 33 remaining
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 30T

Part No.: 4805-030

Shipping Weight: 207.00 g.

£5.15   £2.81 (£3.37 inc tax)
-45%
In stock
End of line, less than 44 remaining
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 33T

Part No.: 4805-033

Shipping Weight: 226.00 g.

£6.01 (£7.21 inc tax)
In stock
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 35T

Part No.: 4805-035

Shipping Weight: 241.00 g.

£6.60   £3.32 (£3.98 inc tax)
-50%
In stock
End of line, less than 64 remaining
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

05B Steel Chain Sprocket 8mm - 40T

Part No.: 4805-040

Shipping Weight: 281.00 g.

£7.85 (£9.42 inc tax)
[Currently Unavailable]
No date for new stocks
For dimensions and full product description, see here See the 'Custom Machining' tab for details on different bore sizes, shaft fixing and delivery... Read More

 

Just a few of the companies Technobots are an official distributor for:
       Manufacturers